Refactor text color variable names, export 2 color values to Lua

Use light gray color for volume change, just like for the auto camera msgs The idea is that these are "local" messages for local changes

Use full string for sidFuel and avoid string concatenation Fuel as in fuel for saucer, landgun, flamethrower, icegun. Old string was built with like this: sidFuel + ": " + fuel + "%". New string us built with proper format string instead

Make ammo count in ammo menu translatable, and replace “x” with “×”

Fix slightly misplaced ammo count in ammo menu if count > 9

Fix attack bar render bugs: Invisible beyond world edge; rendered over GUI (e.g. mission panel)